In the worst case, you will run into the scam.

Firstly, you need to pay attention to how much time the apartment has been with the owner, if this period is less than one year, you should beware — at the best case you came across a reseller, or an object with a significant jamb, which the owner did not notice when acquiring housing. In the worst case, you will run into the scam. It is better to refuse such a purchase if the apartment is not your limit of dreams. If the period of ownership of the premises is very small, about a couple of months, then in no case do not acquire this object, because it is 100% scam. Mostly scammers for quick sale of the apartment offer reduced prices.